• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to ferrous metallurgy, in particular to methods for producing molten iron. The purpose of the invention is to reduce energy consumption. The pretreated particles of the starting material are introduced from above into a pseudo-oxidation layer formed of carbon-containing particles and an oxygen-containing carrier gas. When passing through the fluidized bed in countercurrent to the carrier gas, the solid particles are heated, reduced and melted. The fluidized bed receives additional energy from the plasma torches at the height of the oxygen-containing carrier gas in the fluidized bed. The application of the invention will reduce the consumption of coal per ton of iron by about 2 times. 2 hp f-ly, 1 ill.
    公开号:SU1498396A3
    申请号:SU874028884
    申请日:1987-01-30
    公开日:1989-07-30
    发明作者:Хаук Рольф
    申请人:Фоест - Альпине Аг (Фирма)；
    IPC主号:
    专利说明:

    (21) 4028884 / 23-02
    (22) 01/30/87
    (31) p 3603894.6
    (32) 05.02.86
    (33) DE
    (46) 07/30/89. Bul Number 28
    (71) Foest-Alpine AG (LT)
    (72) Rolf Hauk (BE)
    (53) 669.183.421 (088.8)
    (56) European Patent EP No. 0037809 B Ijkl. From 21 to 13/00, 1982.
    (54) METHOD FOR OBTAINING LIQUID CAST IRON OR STEEL SEMI-PRODUCT FROM IRON-CONTAINING MATERIAL
    (57) The invention relates to ferrous metallurgy, in particular to methods for producing liquid iron. Pel invention - reduction of energy consumption. The pretreated particles of the starting material are introduced from above into a pseudo-oxidation layer formed of carbon-containing particles and an oxygen-containing carrier gas. When passing through the fluidized bed in countercurrent to the carrier gas, the solid particles are heated, reduced and melted. The fluidized sl obtains additional energy from the plasma torches at the height of the oxygen-containing gas a carrier gas in the fluidized bed. The application of the invention will reduce the consumption of coal per ton of iron by about 2 times. 2 hp f-ly, 1 ill.
    S
    (L
    The invention relates to ferrous metallurgy, and specifically to methods for producing liquid iron.
    The aim of the invention is to reduce energy consumption.
    The drawing shows a plant for reducing iron ore to liquid iron or semi-finished steel making.
    Lump (preferably) iron ore is fed from above through inlet 2 into the reduction shaft furnace 1. In the lower part of the recovery shaft furnace 1 through the inlets 3, located in a circle, serves the reducing gas. The reducing gas rises in the shaft furnace 1 and restores the iron ore descending in countercurrent. From the top
    part of the furnace, the process gas containing, as a result of the reduction of iron ore, a significant proportion of CO.J and Hj.0 is removed through conduit 4. Iron ore, previously reduced to an iron content of 45-95%, in the form of sponge iron is withdrawn through pipeline 5 from the lower part of the shaft furnace 1. Sponge iron through pipeline 5 enters the melting gasifier 6. Coal (from fine to coarse grain) is fed into the head of the melting gasifier 6 through pipeline 7.
    Plasma torches 8 at the same height are blown through pipe 4 CO through the circumferential melter gasifier 6 at the same height.
    00
    with c

    O4
    Du 9 oxygen or oxygen-containing gas as a carrier gas. Plasma burners 8 are in the lower zone of the melter gasifier 6. The ascending carrier gas forms a fluidized bed with sponge iron and coal. In this layer, carbon is saturated with oxygen. The gas that rises from the melting gas j6 containing CO and enters through conduit 10 into cyclone I1, where it is cleaned of solid particles, such as coal and ash. The gas coming out of the cyclone 11 is injected through inlets 3 into the shaft furnace 1 and serves as a reducing gas for iron ore, Bzykhod and (the gas from the melter of the gasifier 6 has a temperature of about 1050 ° C, and the temperature of the reducing gas is acceptable is within, for this reason a pipeline 12 is connected to the pipeline 10, through which cooling gas is supplied, so that the gas entering the cyclone 11 has a temperature of 850 s,
    Cooling ha: is obtained from the tapped from the mine pe. h 1 process gas. The latter is first post-30 and / or gaseous.
    flows through conduit 4 to the scrubber 13, which largely cleans the gas from dust and then to the compressor 14 and finally to the device 15 to clean the gas from COj,
    A portion of the treated process gas is used as a cooling gas for the reducing gas, and the remainder is used as plasma-forming gas for at least one additional plasma torch 16. The plasma torch 16 is located at the same height as the plasma torch 8,
    The treatment is subjected only to the amount of process gas that is needed to cool the reducing gas or to be used as a plasma gas. After passing the scrubber i3 through a special pipeline, the excess part of the process gas is sent for use for another purpose.
    The solid particles separated in the cyclone 11 are fed back through the pipeline 17. To the melted gasifier 6 at the height of the fluidized bed. AT
    In this case, they are fed to the melting gasifier 6 through plasma torches, not shown in the drawing, B adjacent. To the bottom of the gasifier zone 6 of the gasifier 6, there are outlet ports 18 for liquid slag and molten iron.
    By introducing plasma energy into the lower part of the fluidized bed, it is fully utilized to melt sponge iron. o In addition, molten sponge iron and cast iron are not cooled in the lower part of the fluidized bed, which should be avoided when plasma torches are located in the upper or middle zone of the fluidized bed.
    ABOUT
    lay As a result, an ideal temperature distribution over the entire height of the fluidized bed is achieved, which ensures maximum energy utilization.
    Additional temperature control can be achieved by supplying the melter gasifier 6 through plasma torches 8 carbon carriers in solid and / or liquid.
    The application of the invention will reduce the consumption of coal per ton of iron by about two times.
    权利要求:
    Claims (3)
    [1]
    35 claims
    0 5
    I, A method for producing liquid iron or steel semi-product from iron-containing material, including loading pre-reduced material from above into a melter gasifier, heating, restoring and smoothing in a fluidized bed of coal particles gasified in an oxygen-containing gas, supplying plasma-forming gas to a pseudo-fluidized bed the freezing layer, characterized in that, from the reduction of energy consumption, the plasma-forming gas and the oxygen-containing carrier gas are fed in one horizontal plane in the lower Ator gasification STI above the melt, and the process gas exhaust after the prereduction was purified from dust, moisture and CO., and partially
    0
    five
    L y ajiai pn j i
    fed to the cooling of the exhaust reducing gas from the melter gasifier and partly as
    additional plasma gas.
    [2]
    2. Method POP.1, characterized in that an oxygen-containing carrier gas is used as the plasma-forming gas.
    [3]
    3. Method POP.1, characterized in that the reducing gas from the melter gasifier is cleaned from dust and the dust returned to the fluidized bed.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1498396A3|1989-07-30|Method of producing molten iron or steel semiproduct from iron-containing material
    US4806154A|1989-02-21|Process for the production of pig iron from fine ore using plasma burner
    RU1813099C|1993-04-30|Method of producing liquid cast iron and installation for performing the method
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    KR900004155B1|1990-06-18|Process and apparatus for making sponge iron especially pig iron
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    US4537626A|1985-08-27|Method for the production of reaction gases
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    KR100769794B1|2007-10-25|Process and plant for producing pig iron or liquid primary steel products in a blast furnace
    CA1268633A|1990-05-08|Method of producing molten pig iron or steel pre-products from particulate ferrous material
    US6051048A|2000-04-18|Production of fuel gas
    UA41419C2|2001-09-17|A method for PRODUCTION OF MOLTEN PIG iroN oR PRE-products of steel and sponge iron FROM iron ore and a plant for ITS realizATION
    RU97106332A|1999-05-20|METHOD FOR PRODUCING LIQUID IRON OR LIQUID STEEL SEMI-PRODUCTS AND INSTALLATION FOR CARRYING OUT THE METHOD
    EP0657550A1|1995-06-14|Method and apparatus for producing iron
    CA2231429C|2006-09-19|Process for producing liquid metal and facilities for carrying out the process
    KR930007309B1|1993-08-05|Process for the production of pig iron using cyclone
    CA1204287A|1986-05-13|Method of generating a reducing gas
    CA2260207C|2006-05-09|Process for producing a reduction gas for reduction of metal ore
    KR19990077052A|1999-10-25|Sponge iron production process
    同族专利:
    公开号 | 公开日
    AU599351B2|1990-07-19|
    ZA87795B|1987-09-30|
    EP0236669A1|1987-09-16|
    DE3603894C2|1993-03-18|
    BR8700488A|1987-12-08|
    DD254597A5|1988-03-02|
    EP0236669B1|1989-07-19|
    AU6709086A|1987-08-06|
    US4755219A|1988-07-05|
    JP2618385B2|1997-06-11|
    KR870008034A|1987-09-23|
    JPS62185813A|1987-08-14|
    DE3603894A1|1987-08-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3993473A|1975-03-20|1976-11-23|Bethlehem Steel Corporation|Method of reducing iron oxide|
    DE2843303C2|1978-10-04|1982-12-16|Korf-Stahl Ag, 7570 Baden-Baden|Process and plant for the production of liquid pig iron and reducing gas in a melter gasifier|
    AT367453B|1980-04-03|1982-07-12|Voest Alpine Ag|METHOD AND DEVICE FOR PRODUCING LIQUID GUT IRON OR STEEL PRE-MATERIAL|
    FR2526141B1|1982-04-30|1988-02-26|Electricite De France|METHOD AND INSTALLATION FOR HEATING A FLUIDIZED BED BY PLASMA INJECTION|
    DE3328373A1|1982-11-15|1984-05-17|Korf Engineering GmbH, 4000 Düsseldorf|METHOD AND SYSTEM FOR THE DIRECT PRODUCTION OF SPONGE IRON PARTICLES AND LIQUID PIPE IRON FROM PIECE IRON ORE|
    AT382165B|1983-08-18|1987-01-26|Voest Alpine Ag|METHOD FOR THE PRODUCTION OF LIQUID PIPE IRON OR STEEL PRE-PRODUCTS AND DEVICE FOR IMPLEMENTING THE METHOD|
    AT388388B|1983-11-24|1989-06-12|Voest Alpine Ag|METHOD AND DEVICE FOR MELTING IRON IN A MELT-UP CARBURETTOR|
    DE3438487C2|1984-10-17|1987-10-15|Korf Engineering Gmbh, 4000 Duesseldorf, De|
    DD229714A1|1984-12-07|1985-11-13|Bandstahlkombinat Matern Veb|METHOD FOR RETURNING HOT DUST IN A CARBURETOR|
    DE3535572C2|1985-10-03|1987-10-15|Korf Engineering Gmbh, 4000 Duesseldorf, De|DE3438487C2|1984-10-17|1987-10-15|Korf Engineering Gmbh, 4000 Duesseldorf, De|
    AT388390B|1987-11-12|1989-06-12|Voest Alpine Ag|METHOD FOR DEZINCIFYING THE FLOW OF MATERIAL WHEN OPERATING A PLANT FOR PRODUCING RAW IRON|
    WO1989007499A1|1988-02-09|1989-08-24|The Broken Hill Proprietary Company Limited|Superheating and microalloying of molten metal by contact with a plasma arc|
    DE4108283A1|1991-03-14|1992-09-17|Kortec Ag|METHOD FOR PRODUCING LIQUID METAL FROM FINE-GRAIN METAL OXIDE PARTICLES, AND REDUCTION AND MELTING STOVES FOR CARRYING OUT THE METHOD|
    US5320676A|1992-10-06|1994-06-14|Bechtel Group, Inc.|Low slag iron making process with injecting coolant|
    US6197088B1|1992-10-06|2001-03-06|Bechtel Group, Inc.|Producing liquid iron having a low sulfur content|
    US5354356A|1992-10-06|1994-10-11|Bechtel Group Inc.|Method of providing fuel for an iron making process|
    US5397376A|1992-10-06|1995-03-14|Bechtel Group, Inc.|Method of providing fuel for an iron making process|
    AT403055B|1993-05-07|1997-11-25|Voest Alpine Ind Anlagen|METHOD FOR RECYCLING IRONIC WASTE OR RESIDUES|
    US5958107A|1993-12-15|1999-09-28|Bechtel Croup, Inc.|Shift conversion for the preparation of reducing gas|
    DE19634348A1|1996-08-23|1998-02-26|Arcmet Tech Gmbh|Melting unit with an electric arc furnace|
    DE19638346C1|1996-09-19|1998-02-12|Voest Alpine Ind Anlagen|Method for monitoring the operation of a device for supplying an abrasive medium with the aid of a fluid|
    KR100237258B1|1997-04-30|2000-01-15|박재형|Pyrolytic method for treating wastes by using plasma|
    DE102006048601A1|2006-10-13|2008-04-17|Voest-Alpine Industrieanlagenbau Gmbh & Co|Method and device for producing molten material|
    WO2014119612A1|2013-01-31|2014-08-07|住友重機械工業株式会社|Fluidized bed combustion furnace and method for operating fluidized bed combustion furnace|
    CN106086282B|2016-06-22|2018-07-03|张英华|A kind of COREX fused reduction iron-smeltings equipment and iron smelting method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3603894A|DE3603894C2|1986-02-05|1986-02-05|
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